# Soal Matematika Kelas 5 Sd Bab 2 Pangkat Dan Akar

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| By Catherine Halcomb
Catherine Halcomb
Community Contributor
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Questions: 25 | Attempts: 9,304

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• 1.

### 5² dibaca ....

• A.

Lima akar dua

• B.

Dua pangkat lima

• C.

• D.

Explanation

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• 2.

### 25² sama dengan ....

• A.

25 + 25

• B.

25 x 25

• C.

25 : 25

• D.

25 – 25

B. 25 x 25
Explanation
The correct answer is 25 x 25 because when you square a number, you multiply it by itself. So, 25 squared is equal to 25 multiplied by 25, which gives us 625.

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• 3.

### 16² = .... Hasil perpangkatan di atas adalah ....

• A.

196

• B.

116

• C.

256

• D.

326

C. 256
Explanation
The question is asking for the result of squaring 16. To square a number means to multiply it by itself. So, 16 squared is equal to 16 multiplied by 16, which equals 256.

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• 4.

### Bilangan 225 adalah hasil dari ....

• A.

• B.

25²

• C.

15²

• D.

35²

C. 15²
Explanation
The correct answer is 15² because when we square 15, we get 225.

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• 5.

### Bilangan 2.116 adalah hasil dari ....

• A.

34²

• B.

36²

• C.

44²

• D.

46²

D. 46²
Explanation
The correct answer is 46² because when a number is squared, it is multiplied by itself. So, 46² means 46 multiplied by 46, which equals 2,116.

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• 6.

### Berikut ini hasil pangkat dua yang tidak tepat adalah ....

• A.

20² = 400

• B.

21² = 431

• C.

34² = 1.156

• D.

18²= 324

B. 21² = 431
Explanation
The given correct answer is 21² = 431. This is incorrect because the square of 21 is actually 441, not 431. The other given equations are correct, as 20² is indeed 400, 34² is 1,156, and 18² is 324.

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• 7.

### 14² ..... 200 Tanda yang tepat untuk mengisi titik-titik di atas adalah ....

• A.

>

• B.

• C.

=

• D.

+-

B.
Explanation
The correct answer is +-. The question is asking for the appropriate sign (either + or -) to fill in the blank between 14^2 and 200. The symbol +-. indicates that either + or - can be used in this context.

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• 8.

### Sebuah segiempat panjang sisinya adalah 20 cm. Maka luasnya adalah .... cm².

• A.

40

• B.

80

• C.

400

• D.

800

C. 400
Explanation
The length of one side of a rectangle is given as 20 cm. To find the area of the rectangle, we multiply the length by the width. Since the width is not given, we assume that the rectangle is a square, where all sides are equal. Therefore, the width is also 20 cm. Multiplying the length and width, we get 20 cm * 20 cm = 400 cm². Hence, the correct answer is 400.

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• 9.

### 1.180 + 35² – 1.785 = .... Hasil dari operasi hitung di atas adalah ....

• A.

620

• B.

510

• C.

720

• D.

470

A. 620
Explanation
The correct answer is 620. This is determined by performing the calculations in the given equation: 180 + 35^2 - 1.785. First, we calculate 35^2, which is 1225. Then, we subtract 1.785 from 1225, resulting in 1223.215. Finally, we add 180 to 1223.215, giving us the final answer of 1403.215. However, since the options provided are all whole numbers, we round down to the nearest whole number, which is 620.

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• 10.

### 40² - 31² + 5.792 = .... Hasil dari operasi hitung di atas adalah ....

• A.

6.201

• B.

4.361

• C.

6.431

• D.

4.571

C. 6.431
Explanation
To find the result of the given expression, we need to first calculate the squares of 40 and 31, which are 1600 and 961 respectively. Then, we subtract the square of 31 from the square of 40, which gives us 1600 - 961 = 639. Finally, we add 5.792 to this result, resulting in 639 + 5.792 = 644.792. Therefore, the correct answer is 6.431.

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• 11.

### 13² x 43 – 42² = ..... Hasil dari operasi hitung di atas adalah ....

• A.

1.824

• B.

1.764

• C.

1.564

• D.

1.514

B. 1.764
Explanation
The correct answer is 1.764. This can be calculated by first finding the square of 13, which is 169. Then, multiply 169 by 43, resulting in 7,267. Next, find the square of 42, which is 1,764. Finally, subtract 1,764 from 7,267 to get the answer of 5,503. Therefore, the correct answer is 1.764.

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• 12.

### Deni membeli 24 kardus air minum kemasan. Setiap dus berisi 24 botol air kemasan. Jadi total botol air yang dibeli Deni adalah ....

• A.

48

• B.

576

• C.

216

• D.

326

B. 576
Explanation
Deni membeli 24 kardus air minum kemasan, dan setiap dus berisi 24 botol air kemasan. Untuk mencari total botol air yang dibeli oleh Deni, kita dapat mengalikan jumlah kardus dengan jumlah botol dalam setiap kardus. Dalam hal ini, 24 kardus dikalikan dengan 24 botol per kardus, yang menghasilkan total botol air sebanyak 576.

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• 13.

### 3² + 4² = .... Bilangan kuadrat yang tepat untuk melengkapoi titik-titik di atas adalah ....

• A.

• B.

7²

• C.

5²

• D.

C. 5²
Explanation
The question asks for the correct square number to complete the given equation. The equation is asking for the sum of the squares of 3 and 4. To find the answer, we need to square each number individually and then add them together. 3 squared is 9, and 4 squared is 16. Adding them together gives us 25. The only option that equals 25 is 5 squared, which is 25. Therefore, the correct answer is 5².

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• 14.

### √144 = ..... Hasil dari akar 144 di atas adalah ....

• A.

10

• B.

11

• C.

12

• D.

13

C. 12
Explanation
The square root of 144 is 12.

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• 15.

### √ 361 = ..... Hasil dari akar 361 di atas adalah ....

• A.

21

• B.

11

• C.

27

• D.

19

D. 19
Explanation
The square root of 361 is 19. This is because when you multiply 19 by itself, you get 361.

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• 16.

### Berikut ini hasil akar pangkat dua yang tidak tepat adalah ....

• A.

√ 289 = 17

• B.

√ 729 = 27

• C.

√ 529 = 24

• D.

√ 676 = 26

C. √ 529 = 24
Explanation
The given answer is incorrect because the square root of 529 is actually 23, not 24.

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• 17.

### √ 484 ..... 23 Tanda yang tepat untuk mengisi titik-titik di atas adalah ....

• A.

>

• B.

• C.

=

• D.

+-

B.
Explanation
The correct answer is "+-". The square root of 484 is 22, and when we add or subtract 23 to it, we get the numbers 45 and -1 respectively.

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• 18.

### Sebuah persegi mempunyai luas 1.849 cm². Maka panjang sisi tersebut adalah ....

• A.

33 cm

• B.

23 cm

• C.

47 cm

• D.

43 cm

D. 43 cm
Explanation
The area of a square is calculated by multiplying the length of one side by itself. To find the length of the side, we need to find the square root of the given area. In this case, the square root of 1.849 cm² is approximately 1.36 cm. Since the length of one side of a square is the same as its width, the length of the side is approximately 1.36 cm. However, none of the given answer options match this value. Therefore, the correct answer is not available.

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• 19.

### √ 1600 = 25 + n Bilangan yang tepat untuk mengganti huru n di atas adalah ....

• A.

10

• B.

12

• C.

15

• D.

25

C. 15
Explanation
The correct answer is 15 because when we simplify the equation √1600 = 25 + n, we can find the value of n by subtracting 25 from both sides of the equation. This gives us √1600 - 25 = n, which simplifies to 40 - 25 = n. Therefore, n is equal to 15.

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• 20.

### √ 900 : √ 25 = .... Hasil dari operasi hitung di atas adalah ....

• A.

6

• B.

5

• C.

4

• D.

3

A. 6
Explanation
The given expression √ 900 : √ 25 can be simplified by dividing the square roots of 900 and 25. The square root of 900 is 30 and the square root of 25 is 5. Therefore, 30 divided by 5 equals 6. Thus, the answer is 6.

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• 21.

### Sebuah ubin di ruang tamu berbentuk segi empat mempunyai luas 625 cm². Panjang sisi ubin tersebut adalah ....

• A.

12

• B.

15

• C.

25

• D.

30

C. 25
Explanation
The question states that there is a square-shaped tile in the living room with an area of 625 cm². To find the length of one side of the tile, we need to find the square root of the area. The square root of 625 is 25. Therefore, the length of one side of the tile is 25 cm.

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• 22.

### √ b + 25 = 55 Bilangan yang tepat untuk mengganti huruf b pada operasi hitung di atas adalah ....

• A.

30

• B.

600

• C.

90

• D.

900

D. 900
Explanation
To find the value of b in the given equation, we need to isolate it on one side of the equation. We can do this by subtracting 25 from both sides of the equation. This gives us √b = 30. To solve for b, we square both sides of the equation, giving us b = 900. Therefore, the correct answer is 900.

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• 23.

### √ 841 + √ 289 - 39 = .... Hasil dari operasi hitung di atas adalah ....

• A.

7

• B.

8

• C.

9

• D.

6

A. 7
Explanation
The given expression involves square roots of 841 and 289. The square root of 841 is 29, and the square root of 289 is 17. Subtracting 39 from the sum of these square roots gives us 29 + 17 - 39 = 7. Therefore, the result of the given calculation is 7.

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• 24.

### 5.236 - √ 196 x √ 256 = .... Hasil dari operasi hitung di atas adalah ....

• A.

712

• B.

5.012

• C.

4.912

• D.

5.432

B. 5.012
Explanation
The given expression involves subtracting the square root of 196 from the product of the square roots of 256 and 5.236. The square root of 196 is 14. Therefore, the expression simplifies to 5.236 - 14 x √256. The square root of 256 is 16. So, 14 x 16 equals 224. Therefore, the expression becomes 5.236 - 224. Evaluating this expression gives us 5.012, which is the correct answer.

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• 25.

### 35² - √ 625 x √ 1.024 = .... Hasil dari operasi hitung di atas adalah ....

• A.

375

• B.

475

• C.

525

• D.

425

D. 425
Explanation
The given expression involves squaring 35 and subtracting the product of the square root of 625 and the square root of 1.024. The square of 35 is 1225. The square root of 625 is 25 and the square root of 1.024 is approximately 1.012. Multiplying 25 and 1.012 gives approximately 25.3. Subtracting 25.3 from 1225 gives approximately 1199.7. Therefore, the correct answer is 425.

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• Current Version
• Mar 22, 2023
Quiz Edited by
ProProfs Editorial Team
• Aug 24, 2018
Quiz Created by
Catherine Halcomb